Delta Electronics Q48DR User Manual

FEATURES

 High Efficiency: 88%@ 1.8V/15A, 3.3V/15A

 Standard footprint:57.9mmx36.8mmx8.5mm

(2.28”×1.45”×0.33”)

 Industry standard pin out

 2:1 input voltage range

 Fixed frequency operation

 Fully protected: OTP, OCP, OVP, UVLO

 No minimum load required

 1500 V isolation and basic insulation

 Two independent power train and separate

trim for each output

 ISO 9001, TL 9000, ISO 14001, QS9000,

OHSAS18001 certified manufacturing facility

 UL/cUL 60950 (US & Canada) Recognized,

and TUV (EN60950) Certified

 CE mark meets 73/23/EEC and 93/68/EEC

directives

Delphi Series Q48DR, 87W-100W, Quarter Brick Dual Output, DC/DC Power Modules:

48V in, 1.8V and 3.3V, 15A out each channel

The Delphi Series Q48DR Quarter Brick Dual, 48V input, dual output,

isolated DC/DC converters are latest offering from one of the world’s

largest power supply manufacturers — Delta Electronics, Inc. This

product family provides up to 100 watts of power or 15A of output current

(each channel simultaneously) in an industry standard footprint. Both

output channels can be used independently of each other with option to

trim each channel either in the same direction or in reversion direction.

With creative design technology and optimized circuit, these converters

possess outstanding electrical and thermal performance, as well as

extremely high reliability under highly stressful operating conditions. All

the models are fully protected from abnormal input/output voltage,

current, and temperature conditions. The Delphi Series converters meet

all safety requirements with basic insulation.

OPTIONS

 Optional second trim pin for

independent trim of the two outputs

 Positive On/Off logic

 Short pin lengths available

APPLICATIONS

 Telecom/DataCom

 Wireless Networks

 Optical Network Equipment  Server and Data Storage

 Industrial/Test Equipment

DATASHEET DS_Q48DR1R833_03162007

TECHNICAL SPECIFICATIONS (T

=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)

PARAMETER NOTES and CONDITIONS Q48DR1R833NRFA

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous 80 Vdc Transient (100ms) <100ms 100 Vdc Operating Temperature Please refer to figure 27 for measuring point -40 114 °C Storage Temperature -55 125 °C Input/Output Isolation Voltage 1500 Vdc

INPUT CHARACTERISTICS

Operating Input Voltage 36 48 75 Vdc Input Under-Voltage Lockout

Turn-On Voltage Threshold 33 34 35 Vdc

Turn-Off Voltage Threshold 31 32 33 Vdc

Lockout Hysteresis Voltage 1 2 3 Vdc

Maximum Input Current 100%load, 36Vin 2.9 A No-Load Input Current 100 150 mA Off Converter Input Current 5 10 mA Inrush Current(I2t) 0.015 A2s Input Reflected-Ripple Current P-P thru 12µH inductor, 5Hz to 20MHz 10 mA

Input Voltage Ripple Rejection 120Hz 50 dB

OUTPUT CHARACTERISTICS

Output Voltage Set Point

Output Voltage Regulation

Over Load

Over Line Vin=36V to 75V,Io1=Io2=full load

Cross Regulation Worse Case ±5 ±10 mV

Over Temperature

Total Output Voltage Range Over sample load, line and temperature

Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Io1, Io2 Full Load, 1µF ceramic, 10µF tantalum

RMS Io1, Io2 Full Load, 1µF ceramic, 10µF tantalum

Operating Output Current Range

Output DC Current-Limit Inception

DYNAMIC CHARACTERISTICS

Output Voltage Current Transient 48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs

Positive Step Change in Output Current Iout1from 50% Io, max to 75% Io, max

Negative Step Change in Output Current Iout2 from 75% Io, max to 50% Io, max

Cross dynamic Each channel independence 20 mV

Settling Time (within 1% Vout nominal) 150 US

Turn-On Transient

Start-up Time, From On/Off Control 10 15 MS

Start-up Time, From Input 10 15 mS

Maximum Output Capacitance Full load; 5% overshoot of Vout at startup

EFFICIENCY

100% Load Iout1, Iout2 full load, 48vdc Vin 88 % 60% Load Iout1, Iout2 60% of full load, 48vdc Vin 88 %

ISOLATION C HARACTERISTICS

Input to Output 1500 Vdc Isolation Resistance 10 MΩ Isolation Capacitance 3000 pF

FEATURE CHARACTERISTICS

Switching Frequency 350 kHz ON/OFF Control, (Logic Low-Module ON)

Logic Low Von/off at Ion/off=1.0mA 0 0.8 V

Logic High Von/off at Ion/off=0.0 µA 18 V

ON/OFF Current Ion/off at Von/off=0.0V 1 mA

Leakage Current Logic High, Von/off=15V 50 uA

Output Voltage Trim Range Output Over-Voltage Protection Over full temp range; %of nominal Vout 115 122 130 %

GENERAL SPECIFICATIONS

MTBF Io=80% of Io, max; Ta=25°C,300FLM 3.0 M hours Weight 26.5 grams Over-Temperature Shutdown Please refer to figure 27 for measuring point 122 °C

Vin=48V, Io=Io.max, Tc=25 ℃

Io1=Io, min to Io, max, Io2=0A Vout 1 Io2=Io, min to Io, max, Io1=0A Vout 2

Tc=-40 ℃ to 85 ℃

Vout 1 0 15 Vout 2 0 15 Vout 1 100% 150% Vout 2 100% 150%

Pout ≦ max rated power

Vout 1 1.771 1.800 1.829 Vout 2 3.247 3.300 3.353

±5 ±10 mV

Vout 1 Vout 2

Vout 1 1.746 1.854 V

Vout 2 3.201 3.399 V

Vout 1 40 80 Vout 2 40 80 Vout 1 10 30 Vout 2 10 30

Vout 1 100 Vout 2 Vout 1 100 Vout 2

Vout 1 10000 Vout 2 10000

±3 ±10 V

±15 ±50

-10 +10 %

100

Vdc

µF

DS_Q48DR1R833_03162007

ELECTRICAL CHARACTERISTICS CURVES

Figure 1: Efficiency vs. load current Iout1 for minimum, nominal, and maximum input voltage at 25

Figure 3: Efficiency vs. load current Iout1 and Iout2 for minimum, nominal, and maximum input voltage at 25 Iout1=Iout2

°C, for Iout2=7.5A.

°C, for

Figure 2: Efficiency vs. load current Iout2 for minimum,

nominal, and maximum input voltage at 25

Figure 4: Power dissipation vs. load current for minimum,

nominal, and maximum input voltage at 25°C. for Iout1=Iout2

°C, for Iout1=7.5A

DS_Q48DR1R833_03162007

ELECTRICAL CHARACTERISTICS CURVES

Vout2

Vout1

Figure 5: Turn-on transient at zero load current(2ms/div). Vin=48V. Negative logic turn on. Top Trace: Vout; 1V/div; Bottom Trace: ON/OFF input: 5V/div

Vout2

Vout1

Figure 6: Turn-on transient at full rated load current (resistive

load) (2 ms/div). Vin=48V. Negative logic turn on. Top Trace: Vout; 1V/div; Bottom Trace: ON/OFF input: 5V/div

Vout2

Vout1

Figure 7: Turn-on transient at zero load current (2ms/div). Vin=48V. Positive logic turns on. Top Trace: Vout; 1V/div; Bottom Trace: ON/OFF input: 5V/div

Figure 8: Turn-on transient at full load current (2ms/div).

Vin=48V. Positive logic turns on. Top Trace: Vout; 1V/div; Bottom Trace: ON/OFF input: 5V/div

Vout1

DS_Q48DR1R833_03162007

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